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CVE-2021-4231— Angular Comment cross site scripting

Quick assessment

Affected
unspecified Angular
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Angular是一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular 11.0.4、11.1.0-next.2版本存在安全漏洞，该漏洞源于HTML 没有指定任何方法来转义评论中的文本，攻击者利用该漏洞能够将任意html和脚本代码注入网站。

CVSS 3.5 · Low EPSS 1.18% · P68

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-4231

Vulnerability Information
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Vulnerability Title
Angular Comment cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Angular up to 11.0.4/11.1.0-next.2. It has been classified as problematic. Affected is the handling of comments. The manipulation leads to cross site scripting. It is possible to launch the attack remotely but it might require an authentication first. Upgrading to version 11.0.5 and 11.1.0-next.3 is able to address this issue. The name of the patch is ba8da742e3b243e8f43d4c63aa842b44e14f2b09. It is recommended to upgrade the affected component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Angular 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Angular是一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular 11.0.4、11.1.0-next.2版本存在安全漏洞，该漏洞源于HTML 没有指定任何方法来转义评论中的文本，攻击者利用该漏洞能够将任意html和脚本代码注入网站。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
unspecified Angular 11.0.0 -

II. Public POCs for CVE-2021-4231

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III. Intelligence Information for CVE-2021-4231

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Patches & Fixes for CVE-2021-4231 (1)

Vendor Advisories for CVE-2021-4231 (2)

Other References for CVE-2021-4231 (1)

IV. Related Vulnerabilities

Same product: Angular
Same vendor: unspecified
Same weakness: CWE-79